Harrow-tooth fastener.



No. 796,798. PATENTED AUG. 8, 1905.

G. B. BLAINE. HARROW TOOTH FASTENER.

APPLICATION FILED mm. a. 1905.

I 1 Y Ill/Ill l/ljA amen 6oz 4 60556 fi/a/he UNITED STATES GEORGE E.BLAINE, OF PIQUA, OHIO.

HARROW-TOOTH FASTENER- Specification of Letters Patent.

Patented Aug. 8, 1905.

Application filed June 5, 1905. Serial No. 263,813.

To all whom, it may concern.-

Be it known that I, GEORGE E. BLAINE, a citizen of the United States,residing at Piqua,

in the county of Miami and State of Ohio, have invented certain new anduseful Improvements in Harrow-Tooth Fasteners; and I do declare thefollowing to be a full, clear, and eXact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

This invention relates to improvements in barrow-tooth fasteners.

The object of the invention is to provide a fastening device forbarrow-teeth by which the same may be secured to the barrow-framewithout the use of bolts and nuts.

A further object is to provide a fastening device so constructed thatthe harrow-tooth will be securely held against vertical movement and thedevice itself against lateral movement, thereby serving a doublefunction of locking the tooth and itself in place.

With the above and other objects in view the invention consists ofcertain novel features of construction, combination, and arrangement ofparts, as will be hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a perspective view of aportion of a harrowframe, showing a tooth secured by my improvedfastening device. Fig. 2 is a vertical sectional view thereof. Fig. 3 isa horizontal sectional view, and Fig. 4 is a detail perspective view, ofthe key or fastening device removed.

Referring more particularly to the drawings, 1 denotes a portion of oneof the harrow-frame bars, which may be of any suitable shape, but whichare here shown and are preferably constructed of channel-iron. Adaptedto be engaged with the bars 1 of the barrow-frame is a clip 2, said clipbeing preferably formed integral or seamless and is adapted to conformto the shape of the bars. In the laterally-projecting portions of theclip adjacent to the channel side of the frame-bar are formed verticalalined rectangular-shaped apertures 4, through which is adapted to beinserted a barrow-tooth 5, said tooth being here shown in the form of aspike and of rectangular shape in cross-section.

In order that the teeth 5 may be secured against vertical movement inthe apertures of the clip 2, a suitable key or fastening device 6 isprovided. The key or fastening device 6 is in the form of a strip ofspring metal bent midway between its ends to form a V-shaped recess 7which is adapted to engage the inner corner of the tooth 5, the sides ofthe recess 7 being adapted to bear upon the two inner sides of thetooth. The ends of the fastening device or key are bent inwardly fromthe recessed portion 7 into engagement with the inner wall of thechannel-shaped frame-bar 1, said engaging ends of the key being bent orcurved outwardly, as shown at 8, to form a bearing-surface to engage thesupporting-bar,

as shown.

By constructing the key or fastening device 6 with a V-shapedcentrally-disposed recess, as herein shown and described, any lateralmovement of the spring will be prevented by the engagement of saidrecessed portion with the sides of the tooth. The engagement of theinwardly-projectingspring-metal portions of the key with the frame-barwill securely hold the teeth against vertical movement, the fasteningdevice thus serving a double function of securing the teeth againstvertical movement and itself against lateral movement.

From the foregoing description, taken in connection with theaccompanying drawings, the construction and operation of the inventionwill be readily understood without requiring a more extendedexplanation.

Various changes in the form, proportion, and the minor details ofconstruction may be resorted to without departing from the principle orsacrificing any of the advantages of this invention.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a harrow-tooth fastener, the combination with a clip adapted to beplaced on the tooth-bars of the harrow-frame, of an angularly-bentspring-metal key adapted to engage a tooth and the adjacent side of theharrowframe bar to hold said tooth in place, substantially as described.

2. In a barrow-tooth fastener, the combination with a seamless band orclip adapted to be placed on the bars of a barrow-frame, of anangularly-bent spring-metal key adapted to engage and bear upon twosides of a tooth and to engage the adjacent side of the harrowframe barand thereby secure both the tooth and itself in place, substantially asdescribed.

3. In a barrow-tooth fastener, the combination with a seamless band orclip adapted to be placed on the bars of a harrow-frame and havingformed in its upper and lower sides a V 5 a 4 796,798

vertically-alined tooth-receiving apertures, against vertical movementand itself against a spring-metal key adapted to be inserted belateralmovement, substantially as described. tween said tooth and the adjacentside of the In testimony whereof Ihave hereunto set my frame-bar, saidkey being bent to form a V- hand in presence of two subscribing"Witnesses. shaped recess, to receive the tooth and fit against two sidesthereof, and inwardly-ex- 7 V GEORGE BLAINE tending spring-arms havingoutwardly-curved Witnesses: ends to engage the adjacent Wall of the har-GEO. W. BERRY,

row-frame bar, thereby securing the tooth J. C. HUGHES.

